Chester gomstock



UNITED STATES PATENT OFFICE,

CHESTER OOMSTOOK, OF BROOKLYN, ASSIGNOR TO THE IRON GLAD MAN [I- FAC'FURIN G COMPANY, OF NEW YORK, N. Y.

ENAMELED IRON-WARE.

SPECIFICATION forming part of Letters Patent No. 415,161, dated November 12, 1889.

Application filed June 11, 1889. Serial No, 313,921. (No model.)

To all whom it may concern:

Be it known that I, CHESTER CoMsTooK, a citizen of the United States, residing at Brooklyn, in the county of Kings, in the 5 State of New York, have invented certain new and useful Improvements in Enameled Ironare, of which the following is a full, clear, and exact description.

My invention relates to certain new and I useful improvements in enameled iron-ware; and it has for its obj ectthe production of a new and improved article of manufacture which shall be durable in quality and attractive in appearance.

I In the art as it at present exists enameled iron-ware consists, generally, of three grades or peculiarities: first, that which is known as mottled ware,in which the surface of the iron is oxidized during the process of manufacture,

and which when finished presents to the eye a series of spots of varying sizes and configuration, accordingly as the surface of the iron is oxidized to a greater or less extent, one class of such mottled ware being known as 2 b granite ware, and another class as agate ware; second, what is known as white ware, in which the original spots or mottles resulting from the process of manufacture are disguised or concealed by the incorporation into the paste, which is subsequently fused to form the enamel, of a suitable opaque coloring-matter; and, third, what is known as plain enameled ware, which latter is fully described and claimed in Letters Patent granted on the 10th day of July, 1888, to the Iron Clad Manufacturing Company, of New York, as assignee of Henry C. Milligan. My invention differs from all of these described improvements in enameled ware both in the 0 process employed and in the resultant aesthetic .efiect, which latter will be best understood by first describing the process or steps taken to produce such effect.

\Vhen the metallic surface to be enameled has been properly pickled and cleansed in the usual way and a paste of suitable material has been prepared in any one of the usual ways for the production of either the mottlec ware, white ware, or plain ware, I incorporate in such paste, preferably,

comminuted or granular oxide of iron, and

after coating the surface of the iron with such paste having so com mingled with it the comminuted oxide of iron it is subjected in the muffle to the usual fusing process, which produces the glazed appearance, but which also leaves the comminuted or granular oxide,

in its natural or substantially natural condition, in practically mechanical suspension within the body of the glaze, and producing an appearance in the finished article which I here denominate as peppered enameled iron-ware, in contradistinction to the aesthetic appearance of the severally and previously described well-known articles in the trade. While, as I have said,I prefer to use granular or comminuted oxide of iron to produce this eifect, it will be understood that I may employ any other suitable contrasting body which will not fuse at the ordinary temper- 7o ature employed for fusing the paste which subsequently constitutes the coating, and I therefore do not wish to be limited in any degree to the character or quality of the material employed for this purpose, so long as it results in the production of what I have termed peppered enameled iron-ware, by which term I intend and mean enameled iron-ware having mechanically suspended or held in and throughout the glaze a granular or comminuted material in color contrasting with that of the body of the enameled coating, and comparatively infusible as compared with the glaze, so that when the latter is fused on the Ware the granular or comminuted contrasting colored material, although mixed with and held in the glaze, will preserve unimpaired its original form, thereby giving the enamel a peppered appearance.

WVhat I claim as new, and desire to secure by Letters Patent, is

1. The process herein described of producing peppered enameled ironware, which consists in first preparing the surface of the iron by pickling and cleansing; second, in coating the iron with enamel having incor- In testimony whereof I have hereunto set my hand this 10th clay of June, A. D. 1839'.

CHESTER COMSTOCK. I

\Vitnesses:

THoRNE S. WALLING, FREDERIC CARRAGANE. 

